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Old 04-13-2020, 02:35 AM   #12 (permalink)
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When I measure my tank I get 120 TDS, Gh 5, kh3.

Is it normal that relation between TDS and GH?

I have read that the most common relation is GH 3 = 120 TDS

I use 100% RO water for the water changes and I change 50%.

My seiryu stones increase gradually the TDS, Gh and Kh until I do the water change.

And another question, seiryu stone release calcium band magnesium in to the water, but I cannot find if it’s in the relation of Ca:Mg of 3:1 o 6:1 or 1:1

Any help will be much appreciated!


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